mTOR-dependent synapse formation underlies the rapid antidepressant effects of NMDA antagonists.
mTOR-dependent synapse formation underlies the rapid antidepressant effects of NMDA antagonists.
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DOI:
10.1126/science.1190287
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发表时间:
2010-08-20
期刊:
影响因子:
--
通讯作者:
Duman RS
中科院分区:
文献类型:
--
作者:
Li N;Lee B;Liu RJ;Banasr M;Dwyer JM;Iwata M;Li XY;Aghajanian G;Duman RS
The rapid antidepressant response after ketamine administration in treatment resistant depressed patients suggests a possible new approach for treating mood disorders compared to the weeks or months required for standard medications. However, the mechanisms underlying this action of ketamine have not been identified. We observed that ketamine rapidly activated the mammalian target of rapamycin (mTOR) pathway, leading to increased synaptic signaling proteins and increased number and function of new spine synapses in the prefrontal cortex of rat. Moreover, blockade of mTOR signaling completely blocked ketamine-induction of synaptogenesis and behavioral responses in models of depression. Our results demonstrate that these effects of ketamine are opposite to the synaptic deficits that result from exposure to stress and could contribute to the fast antidepressant actions of ketamine.
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DOI:
10.1073/pnas.0706679105
发表时间:
2008-01-08
影响因子:
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